block/blk-pm.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2
   3 #ifndef _BLOCK_BLK_PM_H_
   4 #define _BLOCK_BLK_PM_H_
   5
   6 #include <linux/pm_runtime.h>
   7
   8 #ifdef CONFIG_PM
   9 static inline int blk_pm_resume_queue(const bool pm, struct request_queue *q)
  10 {
  11         if (!q->dev || !blk_queue_pm_only(q))
  12                 return 1;       /* Nothing to do */
  13         if (pm && q->rpm_status != RPM_SUSPENDED)
  14                 return 1;       /* Request allowed */
  15         pm_request_resume(q->dev);
  16         return 0;
  17 }
  18
  19 static inline void blk_pm_mark_last_busy(struct request *rq)
  20 {
  21         if (rq->q->dev && !(rq->rq_flags & RQF_PM))
  22                 pm_runtime_mark_last_busy(rq->q->dev);
  23 }
  24 #else
  25 static inline int blk_pm_resume_queue(const bool pm, struct request_queue *q)
  26 {
  27         return 1;
  28 }
  29
  30 static inline void blk_pm_mark_last_busy(struct request *rq)
  31 {
  32 }
  33 #endif
  34
  35 #endif /* _BLOCK_BLK_PM_H_ */